The temperature on October 15, 1889 was about 13.1 °C. The air pressure was 2 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 76%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
June 26 » Bangui is founded by Albert Dolisie and Alfred Uzac in what was then the upper reaches of the French Congo.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 8 » Montana is admitted as the 41st U.S. state.
Day of death February 14, 1957
The temperature on February 14, 1957 was between 3.5 °C and 7.0 °C and averaged 5.4 °C. There was 8.7 mm of rain during 5.3 hours. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 18 » Kenyan rebel leader Dedan Kimathi is executed by the British colonial government.
February 22 » Ngô Đình Diệm of South Vietnam survives a communist shooting assassination attempt in Buôn Ma Thuột.
March 6 » Ghana becomes the first Sub-Saharan country to gain independence from the British.
March 8 » The 1957 Georgia Memorial to Congress, which petitions the U.S. Congress to declare the ratification of the 14th and 15th Amendments to the U.S. Constitution null and void, is adopted by the U.S. state of Georgia.
July 11 » Prince Karim Husseini Aga Khan IV inherits the office of Imamat as the 49th Imam of Shia Imami Ismai'li worldwide, after the death of Sir Sultan Mahommed Shah Aga Khan III.
August 21 » The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I118373.php : accessed February 26, 2026), "Kornelis de Boer (1889-1957)".
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